Analysis
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max time kernel
115s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-02-2024 17:11
Behavioral task
behavioral1
Sample
ac6a30beef122bf03b58cdf3ca44da99.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
ac6a30beef122bf03b58cdf3ca44da99.xls
Resource
win10v2004-20240226-en
General
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Target
ac6a30beef122bf03b58cdf3ca44da99.xls
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Size
133KB
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MD5
ac6a30beef122bf03b58cdf3ca44da99
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SHA1
acbb0ba349920edefa49b21a8c46160f14f41c24
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SHA256
42cc135bba7641d534f8588b94f13f838d9bf29f9b2b02990f1df1d76f02b8cf
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SHA512
1e67894392e7325032956b2b2492f574c6a9f72adf529537a6594110410b3560fe2bb14136cdcc81101e463dfc40438652c459487fd04f3dd24172aa5a63a7df
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SSDEEP
1536:F444SBBv4RVtUj0sqN4UnWHkLWX/6xBSu9sqIg2GHArAIVR+TtXWVbrzQ7ITkApK:NuzHArAFWVbrzQ7ITkylKDRvqTc
Malware Config
Signatures
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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4728 2424 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2732 2424 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2532 2424 cmd.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2424 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 2424 EXCEL.EXE 2424 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE 2424 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 2424 wrote to memory of 2532 2424 EXCEL.EXE cmd.exe PID 2424 wrote to memory of 2532 2424 EXCEL.EXE cmd.exe PID 2424 wrote to memory of 2732 2424 EXCEL.EXE cmd.exe PID 2424 wrote to memory of 2732 2424 EXCEL.EXE cmd.exe PID 2424 wrote to memory of 4728 2424 EXCEL.EXE cmd.exe PID 2424 wrote to memory of 4728 2424 EXCEL.EXE cmd.exe PID 2532 wrote to memory of 1324 2532 cmd.exe attrib.exe PID 2532 wrote to memory of 1324 2532 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ac6a30beef122bf03b58cdf3ca44da99.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:4728 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:2732 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2532 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:1324
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4868 --field-trial-handle=2276,i,1205556100727695622,5044463180471657307,262144 --variations-seed-version /prefetch:81⤵PID:3152